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US 5,667,443 AGranted
Bolt including a cleaning thread point tip
AssigneeRing Screw Works
InventorJohn Allen
Life of this patent
Estimating the term…
Abstract
A fastener has a head and a shank with two ends. One of the ends includes the head while the other includes a pilot point. Also, the shank includes a threaded portion adjacent to the pilot point. A pair of recesses are formed 180.degree. from one another on the point and threaded portion. The recesses extend from the end of the point through at least a first full thread.
Claims7
A method of manufacturing a fastener comprising:
- providing a blank having a head and an unthreaded shank;
- positioning said blank into die means;
- forming a tip and at least one recess in said tip and shank;
- and
- forming threads on said shank adjacent said tip such that said at least one recess extends from said tip through at least a first full thread.
2 more elements
Dependencies are inferred from the claim text.